For the LW public:

(IIRC he has an unusual case of undue optimism about outcomes of timeless trade, owing to theological influences that I understand timeless trade speculations helped exacerbate his vulnerability to.)

The theology and the acausal trade stuff are completely unrelated; they both have to do with decision theory, but that's it. I also don't think my thoughts about acausal trade differ in any substantial way from those of Wei Dai or Vladimir Nesov. So even assuming that I'm totally wrong for granting theism-like-ideas non-negligible probability, the discussion of acausal influence doesn't seem to have directly contributed to my brain getting eaten. That said, I agree with Eliezer that it's generally not worth speculating about, except possibly in the context of decision theory or, to a very limited extent, singularity strategy.